Question on Quick Invoice page

Hi,

We are on PeopleSoft 9.2. In the Quick Invoice entry page, there is a voucher which needs to be deleted.

Accounts Payable>> Vouchers>> Add/Update>> Quick Invoice Entry.

When I select the voucher in the Quick Invoice Page, and choose Delete in Build Status and then hit SAVE, I get the following error message-

Check COMBO EDIT is turned on and there are missing GL BUs in this voucher, so it cannot be SAVED.

Also, on the Review Errors link, I can see that the voucher contains no voucher lines. How can we add lines here ?

Thanks,

Debolina